33888

MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA

6

TERMINAL DEFINITIONS FOR PQFP

Functional descriptions of many of these terminals can be found in the System/Application Information section beginning on

page 19.

Terminal

Terminal

Name

Formal Name

Definition

1

FSI

Fail-Safe Input

The Fail-Safe input terminal level determines the state of the outputs after a

watchdog timeout occurs. This terminal has an internal pullup. If the FSI terminal is

left to float to a logic [1], then HS0 and HS2 will turn on when in the Fail-Safe state.

If the FSI terminal is tied to GND, the watchdog circuit and fail-safe operation will be

disabled, thus allowing operation without a watchdog signal.

2

WDIN

Watchdog Input

This input terminal is a CMOS logic level input that is used to monitor system

operation. If the incoming watchdog signal does not transition within the normal

watchdog timeout range, the device will operate in the Fail-Safe mode. This input

has an active internal pulldown.

3

FS

Fault Status

(Active Low)

This output terminal is an open drain indication that goes active low when a fault

mode is detected by the device. Specific device fault indication is given via the SO

terminal.

4, 26, 27,

58, 59

Positive Power Supply

These terminal connects to the positive power supply and are the source input of

operational power for the device.

5

8

11

14

LS4

LS6

LS8

LS10

Low-Side Output 4

Low-Side Output 6

Low-Side Output 8

Low-Side Output 10

Each low-side terminal is one 0.6

Ω low-side output MOSFET drain, which pulls

current through the connected loads. Each of the outputs is actively clamped at

53 V. These outputs are current and thermal overload protected. Maximum steady

state current through each of these outputs is 500 mA.

6, 9, 12, 15

GND

Ground

These terminals serve as the ground for the source of the low-side output

transistors as well as the logic portion of the device.

GND

LS5

LS6

LS8

LS11

SO

CS

SCLK

GND

LS9

LS10

GND

GND

LS7

LS4

FS

WDIN

NC

HS0

HS0

HS0

HS1

HS1

HS1

NC

NC

NC

HS1

HS1

HS1

HS1

HS0

HS0

HS0

HS0

NC

NC

14

15

16

17

18

19

20

8

9

10

12

13

11

4

5

6

7

3

2

52

39

38

37

36

35

34

33

45

44

43

41

40

42

49

48

47

46

50

51

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com